The downside is you don't know if Eva's Blumenladen is wrong or correct spelling, because only as a name it's correct. That creates additional confusion for learners

Additionally the spelling with an apostrophe needs more space therefore more material to print and print onto. A waste of resources.

It's like the Deppen-Bindestrich and ruins the compactness of German spelling.

Maybe english should adapt body back for backpack in exchange.